Guide · 7 min read
What evidence helps in a Tennessee child custody case?
Custody cases turn on a child's best interests, not on who is the better person. The evidence that helps is specific, dated and about the child. Here is what that looks like, and what to avoid.
- Written byOur Nashville detectives
- UpdatedOctober 25, 2026
- Reading time7 minutes
- Related serviceChild custody investigations
- Tennessee courts decide parenting arrangements based on the child’s best interests, using factors listed in state law.
- Specific, dated, lawful evidence about the child’s safety and care is what helps; general complaints about the other parent rarely do.
- Never use your child to gather evidence, and never record conversations you are not part of.
How Tennessee courts decide
When deciding a parenting plan, Tennessee courts consider a list of best-interest factors, including each parent’s willingness to support the child’s relationship with the other parent, the child’s needs and stability, each parent’s past and potential for future caregiving, and evidence of abuse or of risk to the child.
Your attorney will frame the case around these factors. Your job, and ours, is to gather facts that speak to them.
Evidence that tends to matter
- Impaired driving with the child in the car
- Leaving a young child unsupervised, or with someone the court has barred
- A new partner with a relevant criminal history living in the home
- Missed exchanges, chronic lateness, or ignoring the parenting plan
- Unsafe living conditions you can document lawfully
- Interference with the other parent’s time or communication
What these have in common: they are observable, they can be dated, and they relate directly to the child.
Evidence that can backfire
Judges notice when a parent is building a case against the other parent instead of focusing on the child. A stack of insults, social media screenshots about the other parent’s dating life, or recordings made by a child can hurt your credibility.
- Asking your child to report on the other household
- Recording conversations you are not a party to
- Hidden GPS trackers or spyware
- Confronting the other parent at exchanges to provoke a reaction
Keep a parenting journal
Write down each exchange: time, place, who was present, and anything notable. Keep it factual and calm. A judge should be able to read it without wincing. Save texts and emails in their original form.
What a detective can document
A detective can observe and record, from public places, what happens during the other parent’s time: who is present, whether the child is supervised, whether the parent drives after drinking, and whether the parenting plan is being followed. We can also run background research on a new partner. Our custody investigations are built for exactly this, and our reports are written for family court.
If your child is in danger now
Call 911. If you suspect abuse or neglect, report it to the Tennessee Department of Children’s Services at 1-877-237-0004. Evidence-gathering never comes before a child’s safety.
This guide is general information, not legal advice. Laws change and every situation is different; talk to a Tennessee attorney about your case. Last reviewed October 25, 2026.
When you’re ready
How we can help
Licensed Tennessee private detectives, lawful methods, and reports written for the people who will read them.
Can a private investigator help with child custody?
Yes. A detective can lawfully document conduct during the other parent’s time, research a new partner’s background, and testify about what was observed.
Will a judge consider a detective’s report?
Admissibility is up to the court, but detectives regularly testify in Tennessee family courts about what they personally observed.
Can I record my child’s calls with the other parent?
Be very careful. Recording conversations you are not a party to can violate Tennessee law. Talk to your attorney first.
Talk it through with a detective.
Confidential, no-pressure. We’ll tell you honestly whether a detective is worth it for your situation.